Estimating crustal deformation and gravity variation caused by a large earthquake in a 3-D heterogeneous spherical Earth model
| Project/Area Number |
20840012
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TANAKA Yoshiyuki The University of Tokyo, 地震研究所, 助教 (90508350)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥2,964,000 (Direct Cost: ¥2,280,000、Indirect Cost: ¥684,000)
Fiscal Year 2009: ¥1,248,000 (Direct Cost: ¥960,000、Indirect Cost: ¥288,000)
Fiscal Year 2008: ¥1,716,000 (Direct Cost: ¥1,320,000、Indirect Cost: ¥396,000)
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| Keywords | 地震 / 測地 / 地殻変動 / 重力 / 余効変動 / 粘弾性 / レオロジー / 有限要素法 / 測地学 / 地震学 / 粘性緩和 / プレート沈み込み帯 |
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| Research Abstract |
A large earthquake in a plate subduction zone causes long-term crustal deformation continuing over decades with a spatial scale exceeding 100km. Observed crustal deformation includes the deformation due to past large events. The latter becomes noises when calculating the present stress accumulation on a plate boundary needed for the occurrence of a next event. To decrease those noises, this study has developed a new method to accurately estimate the deformation due to a large event, using satellite gravity data.
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Report
(2 results)
Research Products
(13 results)
